Shaft for a marking instrument



FIG. 1 a side elevational view of a shaft for a marking instrumentshowing my new design;

FIG. 2 is an enlarged scale bottom plan view thereof;

FIG. 3 is an enlarged scale cross-sectional view taken along lines 3--3of FIG. 1;

FIG. 4 is an enlarged scale cross-sectional view taken along lines 4--4of FIG. 1;

FIG. 5 is an enlarged scale top end view thereof;

FIG. 6 is a side elevational view of an alternate embodiment of theshaft for a marking instrument;

FIG. 7 is a side elevational view of another embodiment of the shaft fora marking instrument;

FIG. 8 is an enlarged scale fragmentary side elevational view, of afurther embodiment of the shaft for a marking instrument, the part notshown being the same as the embodiment of FIG. 1; and

FIG. 9 is a bottom end view of the embodiment of FIG. 8.

The ornamental design for a shaft for a marking instrument, as shown anddescribed.